Can a conditional permanent resident get a green card to her child?

You can file a petition. But the wait time is long. You may want to explore the other options for him before filing the immigrant petition.

A conditional Lawful Permanent Resident has all of the rights and privileges of a Lawful Permanent Resident, including the right to sponsor a relative. The only difference is the duration and the need to remove conditions. You should speak to an attorney about filing I-130 for adult son as long as he is not married.

It's a long wait time for F-2A category. The conditional permanent resident may file an immigrant petition for any qualifying relatives such as family based second preference as any permanent residents. 8 CFR 216.1. 8 CFR 216.1 provides …” Unless otherwise specified, the rights, privileges, responsibilities, and duties which apply to all other lawful permanent residents apply equally to conditional permanent residents, including but not limited to the right to apply for naturalization (if otherwise eligible), the right to file petitions on behalf of qualifying relatives, the privilege of residing permanently in the United States as an immigrant in accordance with the immigration laws, such status not having changed;…”